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Table 7-9 Internal Clock Switchover and RTCNT Operation (cont)
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CKS2 to CKS0
No.
Write Timing
High → low switchover
3
High → high switchover
4
Notes: 1. Including switchover from a high clock source to the halted state.
2. The switchover is regarded as a falling edge, causing RTCNT to increment.
RTCNT Operation
*1
Old clock
source
New clock
source
RTCNT
clock
RTCNT
N
Old clock
source
New clock
source
RTCNT
clock
RTCNT
N
182
*
2
N + 1
N + 2
CKS bits rewritten
N + 1
N + 2
CKS bits rewritten
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